diff --git a/packages/smithy/smithy_aws/pubspec.yaml b/packages/smithy/smithy_aws/pubspec.yaml
index 47a9509154..a9fa6613c1 100644
--- a/packages/smithy/smithy_aws/pubspec.yaml
+++ b/packages/smithy/smithy_aws/pubspec.yaml
@@ -30,7 +30,7 @@ dev_dependencies:
   built_value_generator: ^8.10.1
   file: ^7.0.1
   glob: ^2.1.0
-  json_serializable: ">=6.9.4 <6.10.0"
+  json_serializable: ^6.9.4
   pubspec_parse: ^1.2.2
   test: ^1.22.1
   yaml: ^3.1.1